SYDNEY, Dec 8 (Reuters) - South African referee Craig Joubert, who took charge of the 2011 Rugby World Cup final, has decided to retire from officiating the 15-man game and take up a role with governing body World Rugby.

LONDON, Dec 7 (Reuters) - London Welsh, one of the oldest clubs in English rugby, said on Wednesday they were seeking voluntary liquidation due to large debts and a 'totally unsustainable' business model.

LONDON, Dec 7 (Reuters) - British and Irish Lions coach Warren Gatland has named Andy Farrell, Rob Howley and Steve Borthwick as his three assistants for next year's tour of New Zealand and left the door open for a surprise call-up for former Fiji Sevens coach Ben Ryan.